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Finding the Fourth Proportional to 66,422.40, 99,581.22 and 33,125.34

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Solution

The fourth proportional to 66,422.40, 99,581.22 and 33,125.34 is: 49,661.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,422.40 : 99,581.22 = 33,125.34 : x
  2. Step 2: Convert to fraction form
    66,422.40/99,581.22 = 33,125.34/x
  3. Step 3: Cross multiply
    66,422.40x = 99,581.22 × 33,125.34
  4. Step 4: Simplify right side
    66,422.40x = 3,298,661,770.11
  5. Step 5: Solve for x
    x = 3,298,661,770.11/66,422.40
  6. Step 6: Final answer
    x = 49,661.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.